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Don't use 'port' number for DNS query

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- In some cases where the HTTP URL contains the port number
(http://hostname:334), the DNS querier fails to resolve the hostname.
- Hence we have to populate the port number ourselves.
- This can only be done based on whether we get an IPv4 or IPv6
  address.
This commit is contained in:
Kedar Sovani 2017-11-23 17:20:38 +05:30 committed by Jitin George
parent 306d59d32c
commit e45024e088
1 changed files with 21 additions and 9 deletions
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30
components/esp-tls/esp-tls.c
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@ -19,7 +19,7 @@ static const char *TAG = "esp-tls";
#define ESP_LOGE(TAG, ...) printf(__VA_ARGS__);
#endif
static struct addrinfo *resolve_host_name(const char *host, size_t hostlen, int port)
static struct addrinfo *resolve_host_name(const char *host, size_t hostlen)
{
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
@ -33,12 +33,9 @@ static struct addrinfo *resolve_host_name(const char *host, size_t hostlen, int
strncpy(use_host, host, hostlen);
use_host[hostlen] = '\0';
char service[6];
snprintf(service, sizeof(service), "%d", port);
ESP_LOGD(TAG, "port is :%s: host:%s: strlen %zu\n", service, use_host, hostlen);
ESP_LOGD(TAG, "host:%s: strlen %zu\n", use_host, hostlen);
struct addrinfo *res;
if (getaddrinfo(use_host, service, &hints, &res)) {
if (getaddrinfo(use_host, NULL, &hints, &res)) {
ESP_LOGE(TAG, "couldn't get hostname for :%s:\n", use_host);
free(use_host);
return NULL;
@ -59,7 +56,7 @@ static ssize_t tls_read(struct esp_tls *tls, char *data, size_t datalen)
static int esp_tcp_connect(const char *host, int hostlen, int port)
{
struct addrinfo *res = resolve_host_name(host, hostlen, port);
struct addrinfo *res = resolve_host_name(host, hostlen);
if (!res) {
return -1;
}
@ -68,9 +65,24 @@ static int esp_tcp_connect(const char *host, int hostlen, int port)
if (ret < 0) {
goto err_freeaddr;
}
int fd = ret;
ret = connect(fd, res->ai_addr, res->ai_addrlen);
void *addr_ptr;
if (res->ai_family == AF_INET) {
struct sockaddr_in *p = res->ai_addr;
p->sin_port = htons(port);
addr_ptr = p;
} else if (res->ai_family == AF_INET6) {
struct sockaddr_in6 *p = res->ai_addr;
p->sin6_port = htons(port);
p->sin6_family = AF_INET6;
addr_ptr = p;
} else {
/* Unsupported Protocol Family */
goto err_freesocket;
}
ret = connect(fd, addr_ptr, res->ai_addrlen);
if (ret < 0) {
goto err_freesocket;
}